An Oxycontin addicted Long Island couple admitted that they sloppily staged a gunpoint kidnapping in order get ransom money to pay for drugs, cops said today.

Stephanie Benatatos, 21, called her parents at 5:20 p.m. Sunday and claimed that she and her junkie boyfriend, Zifiris Valsamis, had been snatched off of a Mastic Beach street by two men in an SUV.

Roughly half an hour later, Valsamis, who has done time for past drug offenses, rang up the worried parents and said that he had been freed but that the abductors were demanding $400 he owed them for past narcotic buys.

But Suffolk cops said that the bumbling Valsamis, 24, folded after being questioned about inconsistencies in his story.

“We treated it as a kidnapping from the beginning but there was some skepticism on our part,” said Detective Sgt. Mike Tarulli. “There were things that didn’t add up.”

Taruli said that the hoaxer’s manner didn’t help his cause. “There was some definite nervousness on his part,” he said.

After a few hours of questioning, Valsamis admitted that the plot was a ruse designed to squeeze money out of his girlfriend’s parents to pay for drugs.

Soon after, an officer noticed that Valsamis was receiving repeated phone calls on his cell phone and picked it up.

“The girlfriend was on the phone and we told her we knew it was a hoax,” Tarulli said. “We told her to wait on the street where she was and we picked her up.”

Tarulli said that Oxycontin was their drug of choice but that the pair also dabbled in heroin. The conning couple both pleaded not guilty to second-degree attempted grand larceny by extortion and fifth-degree conspiracy raps.

Valsamis, who also arraigned on an outstanding robbery rap for holding up a convenience store in January, was held on $100,000 bail. Benatatos, who has a prior petit larceny arrest, was held on $75,000.

Sources said that the couple have both been drug addled for years and are well known locally for their addictions.